28-11-2019, 06:30 PM
(This post was last modified: 28-11-2019, 06:43 PM by Colin Wilks.)
Having rewired our narrow boat a few years ago I am sure this conundrum is all about voltage drop (if we have any sort of technical issue my wife now states brightly "It's probably voltage drop!". Current and cable run are critical with a low voltage system. Bigger section cable will enable a less than pristine battery to do the business. Bear in mind that it is the volume of copper between A and B that matters, so cutting back a fat cable to make it fit the terminals is not wasted effort, but routing it may be problematic.
Thinking further, the cable runs on a Seven are so short, I doubt voltage drop really matters. I would just take the current draw for your starter and multiply by 1.5 to specify the battery cable.
Thinking further, the cable runs on a Seven are so short, I doubt voltage drop really matters. I would just take the current draw for your starter and multiply by 1.5 to specify the battery cable.